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    Shenzhen Huaihui Electronic Materials Co., LTD
    The 9th Floor, Jinhao Building, No.109, Fuyong Section, Guangshen Road, Fenghuang Community, Fuyong Street, Bao'an District, Shenzhen City
    Tel:+86-0755-27368905 27368906
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    E-mail:huaihui@szhuaihui.com
    Huizhou Huaihui New Material Technology Co., LTD
    Huizhou Boluo County, Changning Town, Puraft Village cowhide Group Source Fa Chemical Industrial Park
    Dongguan Huaihui Welding New Material Co., Ltd
    Floor 3, Building 2, No.13, Chigang Fuma First Road, Humen Town, Dongguan City
Lead-free high temperature series G-988

Lead-free high temperature series G-988


Category: Lead-free Washing-free welding G-880B series

Introduction: G-988 Lead-free solder paste series is formulated with special solder paste and spherical tin-silver-copper alloy powder with very low oxygen content. Excellent continuous printing image resolution; In addition, the solder paste contained in this product uses a highly reliable low-ionic halogen activator system, so that the residue after backwelding can be extremely reliable, even if it is not washed.

Specification parameter

产品简介:
        G-988无铅锡膏系列采用特殊的助焊膏与氧含量极低的球形锡银铜合金粉末配制而成。具卓越的连续印刷解像性;此外,本制品所含有之助焊膏,采用具有高信赖的低离子性卤素之活化剂系统,使其在回焊之后的残渣,即使免洗也能拥有极高的可靠性。
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使用特性:
        
1.) 连续印刷时,其粘度极少经时变化,可获得非常稳定印刷。 

        2.) 对0.4—0.6mm及以上间距的电路,可完成精美的印刷。

        3.) 拥有极佳焊接性,可在不同部位表现出适当的润湿性。  

        4.) 可适当用于一般大气下或氮气之回焊炉。

        5.) 于极高之尖峰温度下,亦能获得良好的焊接性。


成分与特性:
G-988无铅锡膏的各种特性,如表—1及表—2
image.png

炉温曲线图:
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A.预热区:升温速率为1.0—3.0℃/秒,在预热区的升温速度过快,容易使锡膏的流移性及及成份恶化, 易产生爆锡和锡珠现象。

B.恒温区:温度150—180℃,时间:90—120秒最为适宜.如果温度过低,则在回焊后会有焊锡未熔融的情况发生(建议温升速度<2℃/秒)。C.回焊区:尖峰温度应设定在240—255℃。熔融时间建议把217℃以上时间调整为30—80秒,230℃以上时间调整为10—30秒。

D.冷却区:冷却速率<4℃/秒 >



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